D 334 / D334 Pre-Assessment (Latest Update 2026 / 2027) Introduction to Cryptography | Study Questions & Answers | 100% Correct | Grade A - WGU

D 334 / D334 Pre-Assessment (Latest
Update ) Introduction to
Cryptography | Study Questions &
Answers | 100% Correct | Grade A -
WGU


Question:
Which encryption mode always produces the same result for the same
plaintext?


A. CBC
B. ECB
C. CFB
D. CTR
Answer:
ECB

,Question:
Which information protection method has an 80-bit key and operates on 64-
bit data blocks?


A. Skipjack
B. IDEA
C. DES
D. Twofish
Answer:
Skipjack




Question:
How many transformation rounds does AES use with a 192-bit key?
A. 10
B. 12
C. 14
D. 16
Answer:
12

,Question:
How many transformation rounds does AES use with a 128-bit key?


A. 10
B. 12
C. 14
D. 16
Answer:
10




Question:
Which encryption algorithm did the National Institute of Standards and
Technology (NIST) designate as a specification for the encryption of
electronic information?


A. IDEA
B. DES
C. 3DES
D. AES
Answer:
AES

, Question:
Which attack tries every combination of letters, numbers, and special
characters?


A. Rainbow table
B. Birthday
C. Dictionary
D. Brute-force
Answer:
Brute-force




Question:
How does a dictionary attack break a cipher?


A. Factors the prime numbers used within an RSA algorithm
B. Looks for rollover of the same value for an IV
C. Takes a list of the most common words and tries each entry
D. Matches hash values back to the original plaintext
Answer:
Takes a list of the most common words and tries each entry